hte: Fix off by one in hte_push_ts_ns()

The &chip->gdev->ei[] array has chip->nlines elements so this >
comparison needs to be >= to prevent an out of bounds access. The
gdev->ei[] array is allocated in hte_register_chip().

Fixes: 31ab09b42188 ("drivers: Add hardware timestamp engine (HTE) subsystem")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dipen Patel <dipenp@nvidia.com>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/hte/hte.c b/drivers/hte/hte.c
index 891b98a..a14c5bf 100644 (file)
--- a/drivers/hte/hte.c
+++ b/drivers/hte/hte.c
@@ -811,7 +811,7 @@ int hte_push_ts_ns(const struct hte_chip *chip, u32 xlated_id,
        if (!chip || !data || !chip->gdev)
                return -EINVAL;
 
-       if (xlated_id > chip->nlines)
+       if (xlated_id >= chip->nlines)
                return -EINVAL;
 
        ei = &chip->gdev->ei[xlated_id];